Stamp-mill



(No Model.)

G. S. LONG.

STAMP MILL.

No. 298,869. Patented lVIay'ZU, 1884.

ilnrrnn Smarts Partnr amen.

GEORGE SHAV LONG, OF PETROLIA, PENNSYLVANIA.

PECIFICATION forming part of Letters Patent No. 298,869, dated May 20,1884. Application filed September 7, 1883. (No model.)

To all whom t may concern:

Beit known that I, GEORGE S. Lone, a citizen ofthe United States, and aresident of Petrolia, in the county of Butler and State of Pennsylvania,have invented certain new and useful Improvements in Stamp-Mills; and Ido hereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same, reference being hadtothe accompanying drawings, which form a part of this specification,and in which Figure l is a vertical sectional view of my improvedstamp-mill. Fig. 2 is a top view of the same with a portieri of theframe broken away. Fig. 3 is a perspective view of the stamp-operatingcam; and Fig. 4c is a crosssection, on an enlarged scale, of one of thestampstems 'and its box on line x zr, Fig. l.

Similar letters of reference indicate corresponding parts in all theiigures.

My invention has relation to battery stampniills for crushing ore orsimilar minerals; and it consists in the improved construction andcombination of parts of the same, as hereinafter more fully describedand claimed.

In the accompanying drawings, the letter A indicates a circular troughin which the ore to be crushed is placed, and which supports with itscentral raised portion a bed-piece, B, form-v ing a vertical bearing, o,at its center for the reception of the lower end ofthe upright main orcambearing shaft E. This bed-piece is provided at its edges with twouprights, D, forming bearings or boxes m at their upper ends, in whichthe horizontal drive-shaft G is mounted, which is provided at one endwith a pulley, M, by which it is connected to the driving-power by abelt or similar means, and said shaft is also provided inside one of thebearings m with a bevel-pinion, g. rlhe uprights D support a plate orcasting, G, some distance above the bed or base piece, which castingforms an upright sleeve, N, at its center, through which the uprightcam-bearing shaft passes and in which it turns. The upper end of thecam-bearing shaft is provided with a beveled cog-wheel, G, which mesheswith the pinion upon the drive-shaft, from which it receives its motion,and the cam F is keyed or otherwise fastened upon the lower portion ofthe shaft. This cam onsists of a sleeve, a, from the lower end of whichproject three (or more or less) ilanges, t', from the ends of whichproject a corresponding number of triangular wings, o, parallel with thesleeve, forming an annular space, c, between them and the sleeve, havinginclined edges d facing in the direction of the rotation of the shaft,and having vertical rear edges, d, between which and the point ofthefollowinginclined edge are formedspaces c of sufficient width to allowlaterally-projecting friction-rollers upon the stamp-stems to passthrough them.

4The stampstems H are provided at their ripper portions with sleeves I,secured upon them, but in which they may turn, and with ratchets K attheir upper ends, the said ratchets facing upward; and these sleeves,which by preference are square, slide in boxes O, formed in the uppercasting, and preferably provided with anti-friction rollers 0 upon theirinner sides, which boxes are lined with wood or similar materialpossessed of a certain amount of elasticity, combined with strength, forthe purpose of cushioning the jar caused by the vertically-reciprocatingstamps. The lower portions of the stamp-stems slide likewise in similarwood-lined boxes, O, in the base or bed plate, the two sets of boxesguiding the stamps in their up-anddown motion. A lug or bolt, J,projects inwardly from the lower end of each ofthe sleeves upon thestampstems, and is provided with an anti-friction roller, J next to thesleeve, which roller travels upon the inclined edges of the cam-wingsand in the spaces between the wings upon the upanddown stroke when thecam is rotated. Another anti-friction roller, i, upon the inner end ofsaid lug bears against the side of one of a number of vertical rods, w,of which there is one for each stamp, which depend from the uppercasting, having their lower ends proj ceti-ng into the space between thecam-sleeve and the triangular cam-wings. These rods, which, as beforesaid, correspond in number and position to the stamps, serve, togetherwith the square shape of the sleeves upon the stamp-stems, to preventthe sleeves, and with them the lugs with the anti-friction rollers, fromturning. The stamp-stems are turned a part of a revolution at everyupstroke by a corresponding number of pawls, L, hinged to IOO the upperend of the central upright sleeve, and engaging at every upstrolre ofthe stampstems with the ratchets upon the upper ends of the latter,giving them a partial turn, the stems turning in the sleeves. Thisrotary motion will cause the stamps to wear evenly, their ends beingcontinually brought to bear upon the Ore in the trough in a newposition.

By the foregoing description, taken in connection with the accompanyingdrawings, the operation of my machine will be readily understood. Whenthe driver-shaft is revolved,

Y its pinion will impart motion to the camshaft through its bevel-wheel,and the cam will pass with its inclined edges under the anti-frictionrollers upon the sleeves upon the stamp-stems, raising the latter, andagain allowing them to drop suddenly when the rollers arrive to the endsofthe inclined edges, the pawls and ratchets turning them at theupstroke, and the vertical rods and the sleeves and boxes guiding themvertically in their ascent and descent.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United Statesi,

1. The combination of a vertical shaft, a revolving vertical camconsisting of a central sleeve having laterally-projecting anges at itslower end provided with triangular Wings, forming an annular spacebetween them and the sleeve, each wing having an inclined and a.vertical edge, stamps corresponding innumber with the number of thecam-wings, vertical Ways or sleeves I, having laterally-projecting lugsprovided with two anti-friction rollers each, and vertical rodscorresponding in number and position with the stamps vpendent from theframe, projecting with their lower ends into the annular spaces in thecam, and forming guides upon which the inner antifriction rollers uponthe lugs travel, as and for the purpose shown and set forth.

2. The combination, in a stamp-mill, Of an annular trough, a framecomposed Of a circular bed or base piece having a central vertical boxor bearing, a top plate or casting having a central upright sleeve andupright side pieces, square guide boxes or bearings O, verticalguide-rods w, drive-shaft G', bevel-pinion g, cam-shaft E, cam F,constructed as described, bevel-wheel G, stamps H, sleeves I, providedwith projecting lugs J, and friction-rollers J and i, ratchets K, andpawls L, adapted to engage said ratchets on the upstroke of the stamps,all constructed and arranged as and for the purpose shown and set forth.

In testimony that I claim the foregoing as my own I have hereuntoaffixed my signature

